MDVSA-2009:112

Problem description

racoon/isakmp_frag.c in ipsec-tools before 0.7.2 allows remote
attackers to cause a denial of service (crash) via crafted fragmented
packets without a payload, which triggers a NULL pointer dereference
(CVE-2009-1574).

Updated packages are available that brings ipsec-tools to version
0.7.2 for Mandriva Linux 2008.1/2009.0/2009.1 which provides numerous
bugfixes over the previous 0.7.1 version, and also corrects this
issue. ipsec-tools for Mandriva Linux Corporate Server 4 has been
patched to address this issue.

Additionally the flex package required for building ipsec-tools has
been fixed due to ipsec-tools build problems and is also available
with this update.